From c185991379b2754822262d4fcc6559481cef430c Mon Sep 17 00:00:00 2001
From: Frank Lichtenheld <frank@lichtenheld.de>
Date: Thu, 5 Mar 2009 00:04:02 +0100
Subject: [PATCH] Use AptPkg::Version if available

---
 lib/Deb/Versions.pm | 21 +++++++++++++++++++--
 1 file changed, 19 insertions(+), 2 deletions(-)

diff --git a/lib/Deb/Versions.pm b/lib/Deb/Versions.pm
index 53da030..35f0cb5 100644
--- a/lib/Deb/Versions.pm
+++ b/lib/Deb/Versions.pm
@@ -70,11 +70,28 @@ our @EXPORT = qw( version_cmp version_sort suites_cmp suites_sort );
 
 our $VERSION = v1.0.0;
 
-sub version_cmp {
+BEGIN {
+    eval {
+	use AptPkg::Config '$_config';
+	use AptPkg::System '$_system';
+	use AptPkg::Version;
+
+	$_config->init;
+	$_system = $_config->system;
+	my $apt_ver = $_system->versioning;
+	*version_cmp = sub { return $apt_ver->compare(@_) };
+    };
+    unless( *version_cmp ){
+	*version_cmp = \&version_cmp_pp;
+    }
+}
+
+my $re = qr/^(?:(\d+):)?([\w.+:~-]+?)(?:-([\w+.~]+))?$/;
+sub version_cmp_pp {
+    return 0 if $_[0] eq $_[1];
     my ( $ver1, $ver2 ) = @_;
 
     my ( $e1, $e2, $u1, $u2, $d1, $d2 );
-    my $re = qr/^(?:(\d+):)?([\w.+:~-]+?)(?:-([\w+.~]+))?$/;
     if ( $ver1 =~ $re ) {
 	( $e1, $u1, $d1 ) = ( $1, $2, $3 );
 	$e1 ||= 0;
-- 
2.39.2